http://repository.rjt.ac.lk/handle/123456789/4770 Thu, 23 Apr 2026 12:18:50 GMT 2026-04-23T12:18:50Z http://repository.rjt.ac.lk/handle/123456789/4771 ගුවන්විදුලිය, සමාජ මෙහෙවර සහ අනාගත අපේක්ෂා Nanayakkara, Sena Sat, 13 Feb 2016 00:00:00 GMT http://repository.rjt.ac.lk/handle/123456789/4771 2016-02-13T00:00:00Z